Josh discusses this on the front page and links to the New Yorker article, but here is the complete statement by Adelman:

Why so, since my views align a lot more with McCain's than with Obama's? And since I truly dread the notion of a Democratic president, Democratic House, and hugely Democratic Senate?

Primarily for two reasons, those of temperament and of judgment.

When the economic crisis broke, I found John McCain bouncing all over the place. In those first few crisis days, he was impetuous, inconsistent, and imprudent; ending up just plain weird. Having worked with Ronald Reagan for seven years, and been with him in his critical three summits with Gorbachev, I've concluded that that's no way a president can act under pressure.

Second is judgment. The most important decision John McCain made in his long campaign was deciding on a running mate.

That decision showed appalling lack of judgment. Not only is Sarah Palin not close to being acceptable in high office--I would not have hired her for even a mid-level post in the arms-control agency. But that selection contradicted McCain's main two, and best two, themes for his campaign--Country First, and experience counts. Neither can he credibly claim, post-Palin pick.

I sure hope Obama is more open, centrist, sensible--dare I say, Clintonesque--than his liberal record indicates, than his cooperation with Nancy Pelosi and Harry Reid portends. If not, I will be even more startled by my vote than I am now.

Wow. Powell was one thing, but this is the most damning indictment I've seen from someone so far on the right. All I can say is, I'm looking forward to the next right-wing denouncement that comes out.

A last note: I think that Obama is much more moderate than people have been suggesting.